Title

Dielectric waveguide optimization for the enhancement of TE-polarisation transmission of plasmonics-based MSM-PD

Document Type

Journal Article

Publisher

St. Petersburg National Research University of Information Technologies, Mechanics and Optics.

Faculty

Faculty of Health, Engineering and Science

School

Electron Science Research Institute

RAS ID

16711

Comments

This article was originally published as: Karar, A. , Tan, C., Alameh, K. , & Lee, Y. (2013). Dielectric waveguide optimization for the enhancement of TE-polarisation transmission of plasmonics-based MSM-PD. Nanosystems: Physics, Chemistry, Mathematics, 4(3), 378-386. Original article available here.

Abstract

In this paper, we use the finite difference time-domain (FDTD) method to optimize the TE-polarized light transmission of a metal-semiconductor-metal photodetector (MSM-PD) employing a dielectric waveguide on top of metal nano-gratings. Simulation results demonstrate that the funneling transmission of the TE-polarized light through the nanoslit of the MSM-PD structure is highly dependent on the structure geometries, such as the waveguide and nano-grating heights. We also demonstrate that adding a dielectric waveguide layer on top of the nano-metal gratings supports both the TM- and TE polarizations, and enhances the light transmission for TE-polarization around 3-times in comparison with conventional plasmonics MSMPD structures.

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